Gurobi 5.0.1 (linux64) logging started Fri Jan 18 03:11:18 2013

Optimize a model with 1400 rows, 38250 columns and 150750 nonzeros
Presolve removed 50 rows and 2850 columns
Presolve time: 0.21s
Presolved: 1350 rows, 35400 columns, 140750 nonzeros
Variable types: 35050 continuous, 350 integer (350 binary)

Root relaxation: objective 1.715514e+05, 2702 iterations, 0.11 seconds

    Nodes    |    Current Node    |     Objective Bounds      |     Work
 Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time

     0     0 171551.420    0    8          - 171551.420     -      -    0s
     0     0 171553.228    0    8          - 171553.228     -      -    0s
     0     0 171553.228    0    8          - 171553.228     -      -    0s
H    0     0                    171605.66201 171553.228  0.03%     -    0s
     0     1 171569.326    0    4 171605.662 171569.326  0.02%     -    1s
*    4     0               4    171584.76124 171584.761   0.0%  74.5    1s

Cutting planes:
  Flow cover: 1

Explored 5 nodes (3506 simplex iterations) in 1.18 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.715847612416e+05, best bound 1.715847612416e+05, gap 0.0%